Chemical Oxygen Demand Analyzer
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Showing 31–60 of 140 results
| Brand | Hach |
|---|---|
| Origin | Imported |
| Manufacturer Type | Manufacturer |
| Instrument Type | Laboratory |
| Measurement Principle | UV Absorption Spectrophotometry (Portable) |
| Wavelength | 420 nm |
| Range | 0.7–15,000 mg/L COD |
| Accuracy | ≤ ±10% |
| Repeatability | ≤ ±5% |
| LOD | 0.1 mg/L |
| Analysis Time | 20 min per batch |
| Batch Capacity | 15 or 30 samples |
| Brand | Hach |
|---|---|
| Origin | USA |
| Manufacturer Type | Authorized Distributor |
| Product Category | Imported |
| Model Range | COD21258-15, COD21258-25, COD21259-15, COD21259-25 |
| Measurement Ranges | 0–150 mg/L and 0–1500 mg/L |
| Package Sizes | 150-test and 25-test kits |
| Instrument Compatibility | Hach DR5000, DR2800, DR850, DR890 spectrophotometers and colorimeters |
| Brand | Hach |
|---|---|
| Origin | Imported |
| Manufacturer Type | Manufacturer |
| Instrument Type | Portable |
| Measurement Principle | Coulometric Titration (Acidic/Alkaline KMnO₄ Method) |
| Measurement Range | 0–5000 mg/L as O₂ |
| Accuracy | ±2% of full scale |
| Repeatability | ±2% of full scale |
| Detection Limit | 0.2 mg/L |
| Typical Analysis Time | 15 minutes |
| Batch Capacity | Single-sample per run |
| Brand | Hach |
|---|---|
| Origin | Imported |
| Manufacturer Type | Manufacturer |
| Instrument Type | Online Analyzer |
| Measurement Principle | Potassium Dichromate Digestion Method |
| Measurement Range | 10–5,000 mg/L COD |
| Repeatability | ≤5% |
| Measurement Cycle Time | 20 min (to >90% response) |
| Batch Capacity | 15 or 30 samples per cycle |
| Digestion Temperature | 175 °C |
| Digestion Duration Options | 3–120 min (selectable in 1-min increments) |
| Calibration Interval | User-defined automatic schedule |
| Cleaning Interval | User-defined automatic schedule |
| Maintenance Requirement | ~1 hour per month |
| Analog Outputs | Two 4–20 mA isolated outputs |
| Relay Outputs | Two 24 VDC / 1 A digital relays |
| Communication Interfaces | RS232, MODBUS RTU over RS485, Profibus DP (optional) |
| Data Storage | 2,000 measurement records |
| Operating Ambient Temperature | +5 to +40 °C |
| Power Supply | 220 VAC ±10%, 50–60 Hz |
| Power Consumption | ~100 VA |
| Dimensions (W×H×D) | 550 × 810 × 390 mm |
| Weight | ~25 kg (excluding reagents) |
| Brand | Hach |
|---|---|
| Model | CODmax III |
| Type | Online Analyzer |
| Measurement Principle | Potassium Dichromate Digestion Method |
| Range | 10–5000 mg/L COD |
| Accuracy | ±10% |
| Repeatability | ≤5% |
| Detection Limit | 5 mg/L |
| Cycle Time | 2 hours per sample |
| Batch Capacity | 15 samples per run |
| Compliance | Meets Chinese Environmental Monitoring Standard HJ 399-2017 and ISO 6060 |
| Brand | Hach |
|---|---|
| Origin | Imported |
| Manufacturer Type | Manufacturer |
| Model | CODmax III |
| Instrument Type | Online Analyzer |
| Measurement Principle | Potassium Dichromate Digestion Method (High-Temperature Closed-System Digestion) |
| Detection Wavelength | LED at 620 nm |
| Measurement Range | 10.0–5,000 mg/L COD |
| Accuracy | ±10% (10.0–39.9 mg/L), ±6% (40.0–99.9 mg/L), ±3% (100.0–5,000.0 mg/L) |
| Optical Metrology | Multi-stage photometric dosing system |
| Sample Introduction | Precision piston pump with >12-month service life |
| Maintenance Interval | Extended via anti-fouling measurement cycle |
| Diagnostics | Integrated Prognosys predictive diagnostics and Diagnose self-diagnostic engine |
| Compliance | Fully aligned with HJ 377–2019, HJ 35X–2019, and method-equivalent to HJ 828–2017 |
| Brand | HACH |
|---|---|
| Origin | Imported |
| Manufacturer Type | Manufacturer |
| Instrument Type | Online Analyzer |
| Measurement Principle | Potassium Dichromate Digestion Method (Online) |
| Wavelengths | 420 nm (Low Range), 610 nm (High Range) |
| Measurement Range | 10–5000 mg/L COD |
| Accuracy | ±8% of reading |
| Repeatability | ≤3% RSD |
| Detection Limit | 10 mg/L COD |
| Cycle Time | 20 min (standard digestion time |
| Operation Mode | Continuous measurement |
| Compliance | GB 11914–1989, ASTM D1252–2022 (Method B), ISO 6060:1989 |
| Brand | Hach |
|---|---|
| Origin | USA |
| Model | DR/2800 + DRB200 |
| Detection Principle | Colorimetric Measurement after Micro- reflux Digestion (Cr⁶⁺ Reduction) |
| COD Range | 0–15,000 mg/L O₂ (via pre-filled vials) |
| Digestion Temperature | 150 °C ±2 °C |
| Digestion Time | 120 min |
| Vial Format | Sealed 3-mL预制试剂管 (0.2–2 mL sample volume) |
| Compliance | ASTM D1253, ISO 6060, EPA 410.4, USP <643>, GLP-ready data logging |
| Brand | Hach |
|---|---|
| Origin | Imported |
| Manufacturer Type | Manufacturer |
| Instrument Type | Benchtop Laboratory Analyzer |
| Measurement Principle | Dichromate Digestion Method (Portable-Compatible Design) |
| Wavelength Options | 420 nm and 610 nm |
| Wavelength Accuracy | ±1 nm |
| Photometric Linearity | ±0.002 A (0–1 A) |
| Photometric Repeatability | ±0.005 A (0–1 A) |
| Photometric Accuracy | ±0.005 A at 1.0 ABS |
| Stray Light | <1.0% at 400 nm |
| Light Source | LED |
| Detector | Silicon Photodiode |
| Display | 4-digit LCD, 15 mm character height |
| Optical Range | 0–2 A |
| Readout Modes | % Transmittance, Absorbance, Concentration |
| Operating Temperature | 0–50 °C |
| Storage Temperature | −20–60 °C |
| Humidity Limit | 80% RH at 40 °C |
| Ingress Protection | IP41 |
| Power Supply | 190–240 VAC/50 Hz adapter (6 VDC output) or 4 × AA alkaline batteries |
| Battery Life | Up to 6 months (typical usage) |
| Dimensions | 24.0 × 19.8 × 12.0 cm |
| Weight | 2.0 kg |
| Batch Capacity | 0–30 samples per run |
| Digestion Time | 20–120 min |
| Detection Limit & Range | Defined by reagent vial selection (e.g., 0–150 mg/L, 0–1500 mg/L) |
| Measurement Error | ≤8% (15–150 mg/L) |
| Data Interface | RS232 serial port for printer or PC connectivity |
| Brand | Hach |
|---|---|
| Origin | USA |
| Manufacturer Type | Authorized Distributor |
| Product Origin | Imported |
| Model | DR1010 |
| Pricing | Available Upon Request |
| Brand | Hach |
|---|---|
| Origin | USA |
| Model | DR1010 |
| Instrument Type | Benchtop Laboratory Analyzer |
| Measurement Principle | Spectrophotometric (Dichromatic Absorption at 420 nm and 610 nm) |
| Wavelength Accuracy | ±1 nm |
| Photometric Linearity | ±0.002 A (0–1 A) |
| Photometric Repeatability | ±0.005 A (0–1 A) |
| Photometric Accuracy | ±0.005 A at 1.0 ABS |
| Light Source | LED |
| Detector | Silicon Photodiode |
| Display | 4-digit LCD, 1.5 cm character height |
| Optical Range | 0–2 A |
| Drift | <1.0% at 420 nm |
| Power Supply | 6 VDC adapter (190–240 VAC/50 Hz) or 4 × AA alkaline batteries |
| Battery Life | Up to 6 months (typical usage) |
| Operating Temperature | 0–50 °C |
| Storage Temperature | −20–60 °C |
| Relative Humidity | ≤80% at 40 °C |
| Enclosure Rating | IP41 |
| Dimensions | 24.0 × 19.8 × 12.0 cm |
| Weight | 2.0 kg |
| Data Interface | RS232 serial port |
| Readout Modes | % Transmittance, Absorbance, Concentration |
| Brand | Hach |
|---|---|
| Origin | USA |
| Model | DR1010 COD |
| Instrument Type | Portable |
| Measurement Principle | UV-Visible Absorption Spectrophotometry |
| Wavelengths | 420 nm and 610 nm |
| Photometric Accuracy | ±0.005 A at 1.0 ABS |
| Photometric Repeatability | ±0.005 A (0–1 A) |
| Wavelength Accuracy | ±1 nm |
| Photometric Linearity | ±0.002 A (0–1 A) |
| Detector | Silicon Photodiode |
| Power Supply | 190–240 V AC/50 Hz or 4×AA Alkaline Batteries |
| Environmental Rating | IP41 |
| Output Interface | RS232 Serial Port |
| Readout Modes | % Transmittance, Absorbance, Concentration |
| Brand | Hach |
|---|---|
| Origin | USA |
| Type | Laboratory Digestion Block |
| Model | DRB200 |
| Wavelength | 610 nm |
| Measurement Ranges | 0.7–40, 3–150, 20–1500, 200–15000 mg/L COD |
| Accuracy | ≤ ±10% |
| Repeatability | ≤ ±5% |
| LOD | 0.7 mg/L |
| Digestion Time | 20 min or 2 h (programmable) |
| Batch Capacity | 15 or 30 samples (configurable via heating block options) |
| Temperature Range | 37–165 °C |
| Temp Stability | ±2 °C |
| Pre-stored Programs | COD (150 °C, 120 min), plus multiple fixed-temp/time profiles (100/105/150/165 °C, 30/60/120/240/480 min) |
| Power | 100–240 V, 50/60 Hz |
| Operating Environment | 10–45 °C, ≤90% RH (non-condensing) |
| Brand | Hanna Instruments |
|---|---|
| Origin | Italy |
| Model | HI83099 |
| Instrument Type | Portable Photometer |
| Measurement Principle | Colorimetric Absorption (Dichromatic LED-Based Optical System) |
| Wavelengths | 420 nm, 525 nm, 575 nm, 610 nm |
| COD Range Options | 0–150 mg/L (LR), 0–1500 mg/L (MR), 0–15000 mg/L (HR) |
| COD Accuracy | ±10% of reading |
| Repeatability | ±5% |
| LOD (COD-LR) | 0.1 mg/L |
| Measurement Time | 20 min per sample (digestion not included) |
| Batch Capacity | 15 or 30 samples simultaneously (with optional digestion block) |
| Compliance | EPA Method 410.4, ISO 15705 |
| Data Storage | 200 measurement records with timestamp, sample ID, and operator ID |
| Power | Rechargeable 9V battery or AC adapter (230 VAC / 12 VDC) |
| Dimensions | 235 × 200 × 110 mm |
| Weight | 640 g |
| Certifications | CE, RoHS |
| Environmental Rating | IP67-rated housing (dust-tight, immersion-resistant up to 1 m for 30 min) |
| GLP Features | Real-time clock, audit trail, auto-zero calibration, background-lit LCD |
| Brand | HORIBA |
|---|---|
| Origin | Japan |
| Model | F-73 Benchtop |
| Measurement Range | pH 0.000–14.000 |
| Accuracy | ±0.001 pH |
| Repeatability | ±0.001 pH ±1 digit |
| Resolution | 0.001 pH |
| ORP Range | ±1999.9 mV |
| ORP Resolution | 0.1 mV |
| ORP Repeatability | ±0.1 mV ±1 digit |
| Ion Concentration Range | 0.00 µg/L–999 g/L (mol/L) |
| Ion Repeatability | ±0.5% F.S. ±1 digit |
| Temperature Range | −30.0–130.0 °C |
| Temp Resolution | 0.1 °C |
| Temp Repeatability | ±0.1 °C ±1 digit |
| Data Storage Capacity | 2000 measurements |
| Compliance | JIS, USP <645>, EP 2.2.38, JP XVI, ChP |
| Power Supply | AC adapter 100–240 V, 50/60 Hz |
| Power Consumption | ~9.8 VA |
| Weight | 700 g |
| Brand | HORIBA |
|---|---|
| Origin | Japan |
| Model | OPSA-150 |
| Instrument Type | Online Analyzer |
| Measurement Principle | UV-Vis Absorption Spectrophotometry |
| Wavelengths | UV: 254 nm, VIS: 546 nm |
| Measurement Range | 0–10 m⁻¹ SAC (0–0.1 Abs to 0–5.0 Abs equivalent) |
| Repeatability | ±2.0% F.S. |
| Resolution | 0.01 m⁻¹ SAC (0.0001 Abs) |
| Data Logging | Internal storage for 1 year (hourly intervals), CF card export supported |
| Cleaning Method | Continuous wiper-based optical cell cleaning |
| Flow Interruption Detection | Standard flow switch input |
| Display | Touchscreen HMI with guided setup and dual-parameter display (COD + turbidity conversion) |
| Brand | HORIBA |
|---|---|
| Origin | Japan |
| Model | OPSA-150 |
| Instrument Type | Online Analyzer |
| Measurement Principle | Dual-Wavelength UV/VIS Absorption Spectrophotometry |
| Measurement Wavelengths | UV: 253.7 nm, VIS: 546.1 nm |
| Measurement Range | 0–10 m⁻¹ SAC to 0–500 m⁻¹ SAC (0–0.1 Abs to 0–5.0 Abs) |
| Accuracy | ±2.0% F.S. |
| Repeatability | ±2.0% F.S. |
| Detection Limit | 0.01 m⁻¹ SAC |
| Resolution | 0.01 m⁻¹ SAC (0.0001 Abs) |
| Zero Drift Compensation | Rotating Cell-Length Adjustment System |
| Cleaning Method | Continuous Wiper-Based Optical Path Cleaning |
| Data Storage | Internal memory (1-year hourly data) + CF card export |
| Output | 3-channel isolated 4–20 mA analog outputs |
| Communication | RS-232C (19200 bps) |
| Sample Flow Rate | 2–20 L/min |
| Operating Temperature | 2–40 °C |
| Power Supply | AC 100–230 V ±10%, 50/60 Hz |
| Enclosure | Indoor-rated, IP54-equivalent housing |
| Weight | ~100 kg |
| Dimensions | 460 W × 380 D × 1600 H mm |
| Brand | HORIBA |
|---|---|
| Origin | Japan |
| Model | U-50 Series |
| Instrument Type | Portable |
| Measurement Principles | Glass Electrode (pH), Platinum Electrode (ORP), Polarographic Membrane (DO), AC 4-Electrode (Conductivity), LED/Tungsten Light Scattering (Turbidity), Pressure Transducer (Depth), Pt100 RTD (Temperature) |
| pH Range | 0–14 |
| pH Resolution | 0.01 |
| pH Accuracy | ±0.1 |
| pH Repeatability | ±0.05 |
| ORP Range | −2000 to +2000 mV |
| ORP Resolution | 1 mV |
| ORP Accuracy | ±15 mV |
| DO Range | 0–50.0 mg/L |
| DO Resolution | 0.01 mg/L |
| DO Accuracy | ±0.2 mg/L (0–20 mg/L), ±0.5 mg/L (20–50 mg/L) |
| Conductivity Range | 0–10 S/m (0–100 mS/cm) |
| Conductivity Accuracy | ±1% F.S. (midpoint of dual-point calibration) |
| Turbidity Range | 0–1000 NTU (model-dependent) |
| Turbidity Resolution | 0.01 NTU (0–9.99 NTU) |
| Turbidity Accuracy | ±3% reading or ±0.1 NTU (whichever greater, per ISO 7027 or EPA Method 180.1) |
| Depth Range | 0–30 m |
| Depth Resolution | 0.05 m |
| Depth Accuracy | ±0.3 m |
| Temperature Range | −10 to +55 °C |
| Temperature Accuracy | JIS B-class Pt100 (±0.3 + 0.005 |
| Detection Limit (pH/DO/Cond) | 0.1 unit or mg/L or mS/cm (context-dependent) |
| Measurement Time | <10 seconds per parameter set |
| Data Storage | 10,000 measurement groups |
| Battery Life | ~70 hours (alkaline AA ×4, backlight off) |
| IP Rating | IP67 (instrument), IP68 (probe, JIS Class 8) |
| Operating Temp | −5 to +45 °C |
| Storage Temp | −10 to +60 °C |
| Probe Cable Length | Standard 2 m (optional 10 m / 30 m) |
| Probe Material | PPS, SUS316L, SUS304, FKM, PEEK, Ti, FEP, POM |
| Weight (Probe) | ~1800 g |
| Weight (Instrument) | ~800 g |
| Display | 320 × 240 monochrome LCD with backlight |
| Communication | USB |
| GPS | 12-channel (U-52G/U-53G/U-54G models only) |
| Language Support | English, Japanese, Russian, Spanish, Portuguese |
| Origin | Japan |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | UV-2500 (UV Absorption Method) & SDY (Electrochemical Oxidation Method) |
| Pricing | Available Upon Request |
| Brand | HORIBA |
|---|---|
| Origin | Japan |
| Model | W-20XD Series (Outdoor Deployment) |
| Instrument Type | Portable Submersible Data Logger |
| Measurement Principle | Electrochemical & Physical Sensor Array (pH, DO, EC, ORP, Turbidity, Depth, Temp, Salinity, TDS, Seawater Specific Gravity, Ion-Selective Electrodes) |
| pH Range | 0–14 |
| pH Accuracy | ±0.1 pH |
| pH Repeatability | ±0.05 pH |
| pH Resolution | 0.01 pH |
| Dissolved Oxygen Range | 0–19.99 mg/L |
| DO Accuracy | ±0.2 mg/L |
| Conductivity Range | 0–9.99 S/m |
| Conductivity Accuracy | ±3% FS |
| Turbidity Range | 0–800 NTU |
| Turbidity Accuracy | ±5% |
| Depth Range | 0–100 m |
| Depth Accuracy | ±5% |
| Operating Temperature | 0–55 °C |
| Storage Temperature | −5–60 °C |
| Waterproof Rating | IP67 (Control Unit) |
| Continuous Logging Duration | 30 Days (2880 Data Points at 15-min Interval) |
| Max Submersion Depth | 100 m |
| Sensor Housing | Impact-Resistant, Pressure-Compensated Enclosure |
| Data Transmission | Remote Wireless Upload (Optional Module) |
| Brand | Zming Environmental Technology Co., Ltd. |
|---|---|
| Origin | Jiangsu, China |
| Model | HQ-5302 |
| Instrument Type | Portable |
| Measurement Principle | UV Absorption Spectrophotometry |
| Compliance | Designed for field-deployable water quality monitoring in accordance with standard environmental testing protocols (e.g., ISO 15705:2002, HJ/T 399–2007) |
| Brand | Huakeyi |
|---|---|
| Origin | Beijing, China |
| Model | HK-8510 |
| Instrument Type | Laboratory Benchtop Analyzer |
| Measurement Principle | Rapid Digestion Spectrophotometry (in accordance with HJ/T 399–2007) |
| Wavelength | 600 nm |
| Measurement Range | 100–1000 mg/L (extendable to 10,000 mg/L via on-board dilution) |
| Accuracy | ±5% for COD > 50 mg/L |
| Repeatability | ±5% |
| Detection Limit | 0.1 mg/L |
| Analysis Time | 20 minutes per batch |
| Batch Capacity | 16 samples |
| Display | 7-inch capacitive touchscreen (Chinese/English switchable) |
| Data Storage | Up to 100,000 records (measurements, calibrations, system logs) |
| Interface | USB 2.0 for data export |
| Power Supply | AC 100–240 V, 50–60 Hz |
| Power Consumption | 10 W |
| Dimensions | 390 × 248 × 175 mm |
| Weight | 5 kg |
| Brand | HUANKONG |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | Direct Manufacturer |
| Instrument Type | Laboratory-Based |
| Model | 1500 |
| Measurement Principle | Potassium Dichromate Digestion Method (Online Capable) |
| Accuracy | ±2% |
| Detection Limit | 4 mg/L COD |
| Batch Capacity | 20/32/42 samples per run |
| Compliance Standards | GB/T 11914, HJ/T 828 |
| Brand | HUANKONG |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | Direct Manufacturer |
| Instrument Type | Laboratory Benchtop Analyzer |
| Measurement Principle | Potassium Dichromate Digestion Method (Online Closed-System) |
| Accuracy | ±2% |
| LOD | 4 mg/L COD |
| Batch Capacity | 20 / 32 / 42 samples per run |
| Compliance | GB/T 11914 & HJ/T 828 |
| Brand | HUANKONG |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | Direct Manufacturer |
| Product Origin | Domestic (China) |
| Model | 1600N |
| Instrument Type | Laboratory Benchtop Analyzer |
| Measurement Principle | Potassium Dichromate Digestion Method (Online-Capable Configuration) |
| Accuracy | ≤10% RSD |
| Analysis Time | <10 min per sample |
| Batch Capacity | 36 samples |
| Sample Tray | 36-position carousel |
| Digestion Temperature | 100°C with auto-detection and timer control |
| Digestion Method | Electric oil-bath heating for thermal stability |
| Titration Endpoint Detection | Full-spectrum colorimetric recognition (yellow to blue transition) |
| Reagent Delivery System | 8 independent peristaltic pump–valve channels |
| Sample Transfer | Automated precision liquid handling with volumetric accuracy |
| Calibration & Analysis Mode | Simultaneous auto-calibration and sample titration |
| Condensation System | Dual independent recirculating water condensers |
| Titrant Dispensing Resolution | 0.02 mL |
| Titration Environment | Light-shielded chamber with dedicated opaque cover |
| Reagent Arms | Dual independent robotic reagent arms |
| Brand | Jiada Xiaotianshe |
|---|---|
| Origin | Jilin, China |
| Manufacturer Type | Direct Manufacturer |
| Instrument Type | Portable |
| Measurement Principle | Potassium Dichromate Digestion Method (On-site Compatible) |
| Wavelengths | 410 nm and 630 nm |
| Measurement Ranges | Range 1: 0–100 mg/L |
| Range 2 | 50–1000 mg/L |
| Range 3 | 500–3000 mg/L |
| Accuracy | ±5% |
| Detection Limit | 4 mg/L |
| Light Source | High-Brightness LED |
| Power Supply | DC 9 V |
| Dimensions | 200 × 105 × 95 mm |
| Weight | 0.4 kg |
| Brand | Kyoyuan |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Direct Manufacturer |
| Product Type | Laboratory-grade |
| Model | KY-102(12) |
| Heating Method | Electric heating plate with microcomputer timing control |
| Cooling Method | Air-cooled condenser with static water assist at condensate outlet |
| Digestion Vessels | 12 × 250 mL ground-glass (24/29) conical flasks |
| Digestion Time Range | 10 min – 150 min |
| Temperature Control | Surface temperature display per selected power level |
| Power Rating | ≤2500 W (AC 220 V, 50 Hz) |
| Compliance | HJ 828–2017 |
| Measuring Range | 10–700 mg/L COD (dilution required for samples >700 mg/L) |
| Precision | RSD ≤5.0% for potassium hydrogen phthalate standard (500 mg/L) |
| Ambient Operating Temperature | ≤35 °C |
| Brand | Leichi |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | COD-582 |
| Instrument Type | Online Analyzer |
| Measurement Principle | Potassium Dichromate Digestion Method (Online) |
| Measurement Range | 10.0–5000 mg/L |
| Accuracy | ±10% or ±5 mg/L (for values ≤50 mg/L) |
| Repeatability | 5% or 5 mg/L (for values ≤100 mg/L) |
| Resolution | 0.1 mg/L (≤100 mg/L), 1 mg/L (>100 mg/L) |
| Zero Drift | ±5 mg/L/24 h |
| Span Drift | ±10%/24 h |
| Power Supply | AC 220 V ±10%, 50 Hz |
| Dimensions (W×D×H) | 550 × 400 × 1680 mm |
| Weight | 50 kg |
| MTBF | ≥360 hours |
| Output | Isolated 4–20 mA DC (configurable upper/lower limits) |
| Communication | RS-232 or RS-485 (selectable) |
| Interface | 7-inch color LCD touchscreen |
| Maintenance Interval | Up to 30 days without service |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Regional Classification | Domestic (China) |
| Model | COD-571 |
| Instrument Type | Benchtop Laboratory Analyzer |
| Measurement Principle | Dichromate Digestion Method (2-hour standard digestion per ISO 6060 / HJ 828–2017) |
| Wavelengths | 420 nm and 620 nm |
| Measurement Ranges | 0–150 mg/L (low-range), 0–1500 mg/L (high-range) |
| Accuracy | ±8% of reading |
| Repeatability | ≤3% RSD |
| Measurement Time | ~20 min post-digestion |
| Throughput | Batch analysis of multiple water samples |
| Absorbance Range | 0.000–2.000 Abs |
| Absorbance Accuracy | ±0.01 Abs or ±5% |
| Absorbance Repeatability | ≤0.005 Abs or 2% |
| Wavelength Accuracy | ±4 nm |
| Transmittance Error | ±2% |
| Transmittance Repeatability | ≤0.5% |
| Cuvette Compatibility | 10 mm square cuvettes and 16 mm round test tubes |
| Data Storage | 2000 measurement records with timestamp, sample ID, dilution factor, and calibration metadata |
| Connectivity | RS-232, USB-B, optional U disk export |
| Power Supply | AC 100–240 V input / DC 24 V output adapter |
| Dimensions | 302 × 205 × 122 mm |
| Weight | 1.33 kg |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Model | COD-571 |
| Instrument Type | Benchtop Laboratory Analyzer |
| Measurement Principle | Dichromate Digestion Method (2-hour reflux) |
| Wavelengths | 420 nm and 620 nm |
| Measurement Ranges | 0–150 mg/L (low-range), 0–1500 mg/L (high-range) |
| Accuracy | ±8% of reading |
| Repeatability | ≤3% RSD |
| Measurement Time | 20 min per sample (post-digestion) |
| Photometric Range | 0.000–2.000 Abs |
| Absorbance Accuracy | ±0.01 Abs or ±5% |
| Wavelength Accuracy | ±4 nm |
| Transmittance Error | ±2% |
| Photometric Repeatability | ≤0.005 Abs or 2% |
| Sample Throughput | Batch processing for multiple water samples |
| Cuvette Format | 10 mm square cuvettes and 16 mm round test tubes |
| Data Storage | 2000 measurement records |
| Connectivity | RS-232, USB, U-disk export |
| Power Supply | AC 100–240 V input / DC 24 V output |
| Dimensions (W×D×H) | 302 × 205 × 122 mm |
| Weight | 1.33 kg |
| Ingress Protection | IP65 |
| Compliance | GLP-compliant data traceability, audit-ready logging |